drivers/video/fbdev/omap/lcd_osk.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * LCD panel support for the TI OMAP OSK board
   4  *
   5  * Copyright (C) 2004 Nokia Corporation
   6  * Author: Imre Deak <imre.deak@nokia.com>
   7  * Adapted for OSK by <dirk.behme@de.bosch.com>
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/platform_device.h>
  12 #include <linux/gpio.h>
  13
  14 #include <mach/hardware.h>
  15 #include <mach/mux.h>
  16
  17 #include "omapfb.h"
  18
  19 static int osk_panel_enable(struct lcd_panel *panel)
  20 {
  21         /* configure PWL pin */
  22         omap_cfg_reg(PWL);
  23
  24         /* Enable PWL unit */
  25         omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
  26
  27         /* Set PWL level */
  28         omap_writeb(0xFF, OMAP_PWL_ENABLE);
  29
  30         /* set GPIO2 high (lcd power enabled) */
  31         gpio_set_value(2, 1);
  32
  33         return 0;
  34 }
  35
  36 static void osk_panel_disable(struct lcd_panel *panel)
  37 {
  38         /* Set PWL level to zero */
  39         omap_writeb(0x00, OMAP_PWL_ENABLE);
  40
  41         /* Disable PWL unit */
  42         omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
  43
  44         /* set GPIO2 low */
  45         gpio_set_value(2, 0);
  46 }
  47
  48 static struct lcd_panel osk_panel = {
  49         .name           = "osk",
  50         .config         = OMAP_LCDC_PANEL_TFT,
  51
  52         .bpp            = 16,
  53         .data_lines     = 16,
  54         .x_res          = 240,
  55         .y_res          = 320,
  56         .pixel_clock    = 12500,
  57         .hsw            = 40,
  58         .hfp            = 40,
  59         .hbp            = 72,
  60         .vsw            = 1,
  61         .vfp            = 1,
  62         .vbp            = 0,
  63         .pcd            = 12,
  64
  65         .enable         = osk_panel_enable,
  66         .disable        = osk_panel_disable,
  67 };
  68
  69 static int osk_panel_probe(struct platform_device *pdev)
  70 {
  71         omapfb_register_panel(&osk_panel);
  72         return 0;
  73 }
  74
  75 static struct platform_driver osk_panel_driver = {
  76         .probe          = osk_panel_probe,
  77         .driver         = {
  78                 .name   = "lcd_osk",
  79         },
  80 };
  81
  82 module_platform_driver(osk_panel_driver);
  83
  84 MODULE_AUTHOR("Imre Deak");
  85 MODULE_DESCRIPTION("LCD panel support for the TI OMAP OSK board");
  86 MODULE_LICENSE("GPL");